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HOMESERVICE MANUALSHYUNDAI2017SANTA FE SE, FWDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM DIAGNOSIS (2 OF 3)DTC P0302: CYLINDER 2-MISFIRE DETECTEDDTC INFORMATIONDTC DETECTING CONDITION
2017 Hyundai Santa Fe SE, FWD

DTC Information: DTC Detecting Condition

2017 Hyundai Santa Fe SE, FWDSECTION DTC Detecting Condition
DTC DETECTING CONDITIONS AND POSSIBLE CAUSES

Item Detecting Condition Possible Cause
DTC Strategy
  • Determine if a multiple cylinder misfire or a cylinder specific misfire is occurring by monitoring crankshaft rotation speed.
  1. Faulty Spark plugs
  2. Faulty Spark plug cables
  3. Air Leakage
  4. Belt deflection and Air gap of CKPS
  5. Incorrect timing
  6. Faulty injector
  7. Improper fuel pressure
  8. Improper engine compression
Enable Conditions No disabling faults present/no disabling Active Faults
  • P0340/P0341/P0118/P0117/P0115/P0336/P0335/P1295
  • Engine speed between 550 and 5800 RPM
  • System voltage between 9V and 18V
  • The ECT indicates an engine temperature between -6°C (20°F) and 120°C (248°F)
Threshold value Case 1
  • Individual cylinder misfire detection
Case 2
  • Emissions damaging - 18 times in 600 ignitions (In case that the misfire affects more than 1.5 times than the Federal Test Procedure (FTP) tailpipe standard)
Case 3
  • Catalyst damaging - 95 times in 600 ignitions at idle (It is going to be changeable according to the load or the temperature which is not in the range where it does not melt catalyst)
Diagnosis Time
  • Continuous
MIL On Condition
  • 2 Drive Cycles
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.